Lawn-mower



- 2 Sheets-Sheet 1. H. H. DILLE & E. W. MCGUIRE. Lawn Mower PatentedAug. 17,1880.

I N'o.v23l,286.

NPETERS, PKOTQ-LITNOGRAPHERI WASHINGTON D C 2 Sheets-Sheet 2. H. H.DILLE 8v B. W. McG-UIRE.

Lawn Mower.

'No. 2 3l,286.

Patented Aug. 17,1880.

H lmmmilll NFETENS. PROTG-UTHOGfiAFHER. WASHINGTON D G UNITED STATESPATENT OFFICE.

HARRY H. DILLE AND ELWOOD W. MCGUIRE, OF RICHMOND, INDIANA.

LAWN-MOWER.

SPECIFICATION forming part of Letters Patent No. 231,286, dated August17, 1880.

To all whom it may concern:

Be it known that We, HARRY H. DILLE and ELWooD W. MoGUmE, of the city ofRichmond, county of Wayne, and State of Indiana, have invented certainnew and useful Iniprovements in Lawn-Mowers; and we hereby declare thefollowing to be a full, clear, and exact description of the same,reference being had to the drawings which accompany this specification,forming a part of the same, and to the letters of reference markedthereon.

In the drawings, Figure 1 is a perspective view of our machine. Fig. 2is an inside view of the driving-wheel, showing the gearing and itsarrangement. Fig. 3 is a perspective view of a shell'wheel which formspart of the gearing, contained within the periphery of thedriving-wheel. Fig. Ais a top view of the circular plate which forms theinside wall of the driving-wheel, provided with a journal or axle, and aView, also, of the pinion which operates the revolving spiral flanges.Fig. 5 is a vertical section of the machine through the driving-wheels.Fig. 6 is a transverse section through the adjusting-arms and framecarrying the stationary and revolving cutters.

To enable those skilled in the art to make and use our improvements, wewill proceed to describe the same.

The object of our invention is to reduce the number of working parts ofa mower, and to reduce the cost of the same, while rendering it moreeffective and of easier draft; and to this end the invention consists inthe general construction, combination, and arrangement of parts, all aswill be hereinafter fully described, and specifically pointed out in theclaims.

In the drawings, A A represent the driving-wheels, having ribs orprojections on the tread to prevent slipping. B is a shaft provided withspiral flanges, the edges of which are brought to a uniform distancefrom the center of the shaft, so that the revolutions of the cylinder orshaft will bring the edges of the flanges in a line parallel with theaxis of the shaft B.

A connecting or brace rod, 0, is rigidly attached to the circular platesD D, which plates D D are fixed and form a part of the frame, and at thesame time constitute the inside wallsofthe chambersofthedriving-wheelsAA.

A pressure-roller, E, is attached to the rear of the frame by means ofcurved arms 0b a. These arms a a are provided with corrugated surfacesat the point where they are attached to the frame of the mower, and theframe at that point is similarly provided, so that by the means of ascrew-bolt the connection between the arms a a and the frame is maderigid, and the cutter of the mower may be raised or lowered at thepleasure of the operator.

The handles or handle may be attached to our machine in any convenientmanner.

In Fig. 2, A is the driving-Wheel, which is cup-shaped or concave, thecavity forming a circular chamber the outer edges of which are the rimsor tread-surface of the wheel, the depth of the chamber being nearlyequal to the breadth of tread of the wheel.

A is the hub of the driving-wheel, projecting inwardly sufl'icient toform an axle or journal for the shell-wheel F.

The plate D is provided with an axle, B, at its center, upon which thedriving-wheel A revolves, having its hearing at the hub A. The axle Bsupports the frame-work of the machine. Attached to the inside surfaceof the plate D, and near its periphery, a pinion is permanently fixedupon the shaft B of the revolving spiral flanges, the said shaftB havingits end bearings provided in the plate D. Each end bearing for the shaftB is constructed in two pieces, one of which is separate and detachable,and is made adjustable by means of 8 5 set-screws a n.

F is a shell-wheel fitting just within the rim of the driving-wheel A,provided with coggear on the inner surface of its circumference, andprovided with arms f f and a hub, G, which is fitted to and revolvesupon the outer surface of the hub A of the driving-wheel A. The cog-gearm m engages with and operates the pinion Hon the shaft B. F belugaseparate and independent shell gear-wheel, it can be easily replaced byanew one in case of the teeth being broken, thus obviating the expenseof a new drive-wheel, which is necessary where the teeth are formed uponthe inner face of the drivewheel; and the pinion being permanently fixedupon the rotary cutter shaft or spindle, all wear between the shaft orspindle and inner side of the pinion is entirely obviated.

That portion of the inner surface of the driving-wheel A immediatelysurrounding the hub A is provided with a ratchet, M, and two of the armsf f 0f the shell-wheel F are provided with puppet-pins inserted inproper chambers made in the arms ff, the said puppet-pins i i restingupon spiral springs at the bottom of the chambers to insure theirregular action. The heads of the puppet-pins i i are beveled on one sideto allow them to slip over the inclined portions of the ratchet-teethwhen operated the reverse way, while theyare engaged firmly in the teethof the ratchet and give the required motion to the shell-wheel F whenthe forward motion is communicated to the machine.

J J are lugs or ears attached to and forming a part of the frame, towhich is attached the knife K, which is of ordinary construction, andwhich can have its edge raised or lowered, as required, by set-screws,the lugs J J being provided with semicircular recesses to allow thejournals of the knife-stock to turn for that purpose.

The driving-wheels A A are kept in place by linchpins passing throughthe axles in the ordinary manner.

We are aware that mowers have been constructed in which the rotarymotion of the spiral-flange shaft is communicated by the driving-wheeldirect, and that the devices producing this motion are placed inside thedriving-wheel. This we do not claim; but

What we do claim as new, and desire to se cure by Letters Patent, is-

1. In a lawn-mower, the combination of the drive-wheel open at one sideand having a ratchet formed or secured on the inner face thereof, andmounted on the axle of an inclosing-plate, and a separate or independentinterior shell gear-wheel adapted to mesh with a pinion for impartingmotion to a rotary cutter, having arms provided with beveled puppetpinsfor engaging with said ratchet when the drive-wheel is moving in onedirection and sliding over the same when moving in an oppositedirection, substantially in the manner herein shown and described.

2. In a lawn-mower, the combination, with a hollow drive-wheel open atone side and having interior mechanism adapted to operate a pinion forimparting motion to a rotary cutter, of an inclosing-plate provided witha bearing projecting through said plate and formed in two parts, one ofwhich is adjustable for the shaft of the pinion, and devices foradjusting said bearing arranged inside of the drivewheel, substantiallyin the manner herein shown and described.

HARRY H. DILLE. ELVVOOD W. MCGUIRE.

\Vitnesses:

W. T. DENNIS, I. l. KIRN.

